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Search: id:A081394
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| A081394 |
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a(n) is the smallest x such that number of non-unitary prime divisors of central binomial coefficient, A001405(x)=C(x,floor[x/2]) equals n. |
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+0
3
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OFFSET
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0,2
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FORMULA
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a(n)=Min{x; A056175(x)=n}
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EXAMPLE
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n=8: a(8)=959, C(959,479) has 8 non-unitary prime divisors: {2,3,5,7,11,13,23,29} and 959 is the smallest.
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CROSSREFS
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Cf. A081387, A081393, A081395, A056175.
Sequence in context: A109095 A073249 A077621 this_sequence A014494 A129545 A097578
Adjacent sequences: A081391 A081392 A081393 this_sequence A081395 A081396 A081397
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Mar 27 2003
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